Is the toner at 20% or less? Replace the toner and redo all your adjustments then run off a couple hundred copies.
Check the drum earth plate. Maybe not touching the drum shaft. As for dv, check the connections inside the copier. Toners do spills some around there. I do sometimes get dv value that is incorrect. After trying inserting the dv unit a couple of times, I checked the value has changed. It is probably the connection sticking some toners. You might try also cleaning the TD sensors.
Thank you all. I cleaned all connections and the drum plate. Still the same problem. I ran a copy and the image on the drum is perfectly black, so the dv and drum are fine but it seems like there is somethong not right with transfer roller. I took it apart, cleaned adjust the pressure springs and still the same issue. I just ordered a new tranfer roller and im replacing it tomorrow. Any suggestions why is this happening, the copier has 30k on the transfer roller.
Thank you all.
Hi,
try to check Transfert High Voltage.
The HV PCB could be defective.
Good Luck!
Thank you wtroll. I'll try that tomorrow. Today i played with the transfer roller and found out that the image is not being transferred completely to the paper but its still on the drum. So I adjusted the pressure for the transfer roller by making the plastic washer / wheel next to the gear on the transfer roller smaller about 2mm and I got decent image transfer ( better than before) but still not 100% like it should be. I still have on the top part of the image grayish area that I can't adjust or get rid of.
Why do I have the same issue on 2 other copiers?
Thank you all.
another thought. the side doors on this are bad about warping especially if the du4 duples is installed. usually this leads to have the image missing. but could cause ur issue also i would assume.
try pressing in on the door when u make a copy and see if it produces a better copy.
I tried that, same issue. The only thing that helped was to make the plastic washer on transfer roller smaller.
Never had this problem before....
The same issue on two other AR-M450 ???
Very strange.
Mmmh...like an humidity paper problem.
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